Leftover Spaghetti Bake

🧂 Ingredients

This is meant to be a brief overview of this great recipe. For step-by-step instructions and a full printable recipe card with ingredients, please scroll down to the teal box below.

Here’s what you’ll need to make this leftover spaghetti casserole:

• leftover spaghetti with sauce
• eggs
• milk
• grated parmesan cheese
• shredded sharp cheddar cheese or mozzarella cheese

🔪 Instructions

1. Preheat the oven to 350 degrees.
2. Spray a 9×13 casserole dish with nonstick cooking spray.
3. In a large mixing bowl, whisk together the eggs and milk until completely mixed.
4. Stir in the grated Parmesan cheese.
5. Add the spaghetti to the bowl and toss the egg mixture until well combined.
6. Add 1 cup of the cheddar cheese and toss until mixed.
7. Transfer the spaghetti to the prepared baking dish.
8. Bake, covered, for 30 to 40 minutes or until the casserole is cooked through.
9. Remove the cover and top the casserole with the remaining cheese.
10. Return to the oven and bake for an additional 5 to 10 minutes or until the cheese has melted.

🥄Equipment

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In addition to a liquid measuring cup and dry measuring cups, here is what you will need to make this easy recipe:

• Mixing Bowl
• Whisk
• 9×13 casserole dish

For a list of some of my favorite items to use when cooking, and why I chose them, please visit my Kitchen Resource page.

⭐ Tips

✔️ If the leftover spaghetti noodles seem a little bit dry, add some additional marinara sauce.

🍲 Storage

To Store: Leftover Leftover Spaghetti Bake should be stored in the fridge in an airtight container. (These are my favorite airtight containers.)

To Reheat: Microwave individual portions in 30-second intervals until heated throughout.

To Freeze: Cover the casserole with plastic wrap or aluminum foil and then slide the whole casserole into a 2-gallon freezer bag. Be sure to label.

To Thaw: Allow the casserole to thaw overnight in the fridge.

📖 Variations

The first time you try any new recipe we recommend that you make it just as it is written on the recipe card since that is how the pasta recipe has been tested. However, the next time you make our recipe, you might want to try one of these ideas:

• Add 1-2 teaspoons of Italian seasoning or spaghetti seasoning to the spaghetti mixture before baking.
• For extra creamy baked spaghetti, add 1/2 cup of cottage cheese, cream cheese, or ricotta cheese to the milk and egg mixture before adding the leftover spaghetti.
• Other cheeses that would work in this recipe are shredded gouda, gruyère, and fontina.
• To add some nutrition to this dish you can add some veggies into the pasta and spaghetti sauce mixture. One finely diced bell pepper or 1 cup of chopped baby spinach are both great additions.

Out of something you need? Check out our free ingredient substitutions printable!

🍴 Serving Suggestions

A green side salad is the perfect way to add some veggies to this hearty meal. When I have the time, I also serve garlic bread or Italian breadsticks.

You can also take it up a notch by serving it with meat sauce or this cheesy meatball casserole. (I love that this casserole can be made with homemade ground beef and pork meatballs, homemade chicken meatballs, or store-bought meatballs.)

Use leftover or frozen meatballs to make a batch of meatball cupcakes as a side dish.

😋 Similar Recipes

If you love this leftover baked spaghetti, you’ll want to try one of these delicious recipes next time:

• chicken broccoli pasta bake
• American goulash
• eggplant parmesan bake
• cheesy pasta bake
• penne with sausage and broccolini
• Italian sausage pasta
• chicken Caesar pasta
• angel chicken and pasta
• homemade spinach pasta
• monterey spaghetti